398 citations · 5k across the 137 of their papers we have counts for
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The spin temperature of high-redshift damped Lyman- systems
N. Kanekar, J. X. Prochaska, A. Smette +10
We report results from a programme aimed at investigating the temperature of neutral gas in high-redshift damped Lyman- absorbers (DLAs). This involved (1) HI 21cm absorption st…
Non-linear Redundancy Calibration
Visweshwar Ram Marthi, Jayaram Chengalur
For radio interferometric arrays with a sufficient number of redundant spacings the multiplicity of measurements of the same sky visibility can be used to determine both the antenn…
The temperature of the diffuse HI in the Milky Way II: Gaussian decomposition of the HI 21 cm absorption spectra
Nirupam Roy, Nissim Kanekar, Jayaram N. Chengalur
We discuss physical conditions in Galactic neutral hydrogen based on deep, high velocity resolution interferometric HI 21 cm absorption spectroscopy towards 33 compact extra-galact…
The temperature of the diffuse HI in the Milky Way I: High resolution HI 21 cm absorption studies
Nirupam Roy, Nissim Kanekar, Robert Braun +1
We have carried out deep, high velocity resolution, interferometric Galactic HI 21 cm absorption spectroscopy towards 32 compact extra-galactic radio sources with the Giant Metrewa…
The intrinsic shapes of dwarf irregular galaxies
Sambit Roychowdhury, Jayaram N. Chengalur, Igor D. Karachentsev +1
We use the measured B band axial ratios of galaxies from an updated catalog of Local Volume galaxies to determine the intrinsic shape of dwarf irregular galaxies (de Vacouleurs' mo…
A slow bar in the dwarf irregular galaxy NGC 3741
Arunima Banerjee, Narendra Nath Patra, Jayaram N. Chengalur +1
Using the Tremaine-Weinberg method, we measure the speed of the HI bar seen in the disk of NGC 3741. NGC 3741 is an extremely gas rich galaxy with an {H\,{\sc i}} disk which extend…